13122220

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{9241}}^1$

素因数の和:9321

約数の個数: 24

約数和(自身を含む): 27947808

約数和(自身を除く): 14825588

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 9241, 18482, 36964, 46205, 92410, 184820, 656111, 1312222, 2624444, 3280555, 6561110, 13122220]

約数ペア:

[(1, 13122220), (2, 6561110), (4, 3280555), (5, 2624444), (10, 1312222), (20, 656111), (71, 184820), (142, 92410), (284, 46205), (355, 36964), (710, 18482), (1420, 9241)]